# Copyright 2021 Wechat Group, Tencent
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


def get_all_optimizers():
    from .changeincompletedatanode import ChangeIncompleteDataNode
    from .mergesameconstant import MergeSameConstant
    from .mergesamenode import MergeSameNode
    from .precalculate import PreCalculate
    from .removecastbeforecreatevector import RemoveCastBeforeCreateVector
    from .removefreenode import RemoveFreeNode
    from .removefreeconstant import RemoveFreeConstant
    from . import changeloop
    from . import removenode

    modules = [
        removenode,
        changeloop,
    ]

    optimizers = [
        ChangeIncompleteDataNode(),
        MergeSameNode(),
        PreCalculate(),
        RemoveCastBeforeCreateVector(),
        RemoveFreeNode(),
        RemoveFreeConstant(),
        MergeSameConstant(),
    ]

    for module in modules:
        optimizers += module.get_all_optimizers()
    return optimizers
